pH Ácido Fraco
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
aprox
About this calculator
The pH Acid Weak Calculator is a useful tool for calculating the pH of a solution with a weak acid. It uses the formula pH = ½·(pKa − log C), where pKa is the acid dissociation constant of the acid and C is the concentration of the acid in moles per liter.
This calculator is ideal for use in laboratories, schools and chemistry courses. It is a practical tool for calculating the pH of solutions with weak acids, which is essential in many chemical reactions.
Remember that this calculator only provides an estimate of the pH and that accuracy may vary depending on the specific conditions of the solution. Additionally, it is essential to exercise caution when handling chemical solutions and follow good laboratory practices.
The pH Acid Weak Calculator is a useful tool for anyone who needs to calculate the pH of solutions with weak acids.
Frequently asked questions
What is pH and why is it important?
pH is a measure of the acidity or basicity of a solution. It is essential to calculate pH to ensure the safety and efficacy of chemical reactions.
How do I use this calculator?
Simply enter the values of pKa and C into the formula and click calculate to obtain the pH of the solution.
What is pKa and how do I find it?
pKa is the acid dissociation constant of the acid. You can find the value of pKa in chemistry databases or in tables of chemical properties.
Why does the calculator only provide an estimate of pH?
The accuracy of pH may vary depending on the specific conditions of the solution, such as the concentration of the acid and temperature.
What precautions should I take when using this calculator?
Remember that this calculator only provides an estimate of pH and that accuracy may vary depending on the specific conditions of the solution. Additionally, it is essential to exercise caution when handling chemical solutions and follow good laboratory practices.